Alibaba.com offers 1 300w solar panel products. About 100% of these are solar cells, solar panel. A wide variety of 300w solar panel options are available to you, There are 1 300w solar panel suppliers, mainly located in Europe. The top supplying country is Slovakia (Slovak Republic), which supply 100% of 300w solar panel respectively. 00w solar panel products are most popular in Eastern Europe, Western Europe, and Northern Europe.